Patent US 5,452,202

An NC data creation method by which the sequence of machining definition data can be changed to the sequence required by a user. A desired output sequence of machining command data is previously created as pattern definition data by a user executing a predetermined operation. Then, machining command data is input through an input screen as an interactive type input screen. A system processing unit reads the thus input machining command data and the pattern definition data, changes the sequence of the machining command data in accordance with the pattern definition data and outputs machining definition data. Therefore, NC data having the machining definition data provided with the output sequence desired by the user can be directly created. As a result, the sequence of the machining definition data need not be changed again and the NC data can be rapidly created.